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Improving Safety at Intersections Controlled by Traffic Signal Lights

The purpose of the following research was to determine whether conspicuity of an illuminated traffic signal lens could be increased with a modulating incandescent light source. Experiments were conducted both in the laboratory and a controlled field setting under normal and degraded viewing conditions using both static and dynamic testing situations. Four experiments are reported here. There were four other experiments conducted which are not reported here. Some of these served as the basis for later studies.

Impacts of Extreme Events, Phase 2: A Systematic Analysis of Individual Travel Choice Decisions

The tragic events of September 11th, 2001 have had a profound and unimaginable impact on lower Manhattan, and the New York City metropolitan region. The changing perception of the safety of the transportation modes as a result of 9/11 is impacting the way in which the individuals make choices of mode and place of work and residence, and the way in which businesses make location decisions.

Impacts of Extreme Events, Phase 1: Intercity Passenger Travel Behavior - The September 11th Experience

The tragic events of September 11th, 2001 (9/11) have had a profound and unimaginable impact on activities in all of lower Manhattan, and the New York City metropolitan region. Profound, of course, because of the huge loss of life, and because of the continuing sense of trauma of the survivors. These events have also provided a monumental challenge to transportation and city planners because there are no guidelines in US planning/engineering literature on how to manage after such an event occurs.

Identification of Traffic Control Devices for Mobile and Short Duration Work Operations

Project Objective:

The overall objective of this research project is to study mobile work zone safety with particular attention to the identification of work zone safety devices, information systems for the reduction of safety and congestion, and implementation of innovative techniques to reduce delays and crashes due to work zones.  The specific objectives are to:

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